The development and evaluation of secondary food reference materials for the determination of cholesterol, fatty acids and selected water-soluble vitamins in foods

acide ascorbique acide gras acido ascorbico alimentos ascorbic acid cholesterol colesterol fatty acids foods nicotinamida nicotinamide nicotinic acid produit alimentaire riboflavin riboflavina riboflavine thiamin thiamine tiamina vitaminas vitamine vitamins water-soluble vitamins